selection

(sĭ-lĕkˈshən)

1. a. The act or an instance of selecting or the fact of having been selected.
   b. One that is selected.
2. A carefully chosen or representative collection of people or things. See Synonyms at choice.
3. A literary or musical text chosen for reading or performance.
4. Biology A natural or artificial process that favors or induces survival and perpetuation of one kind of organism over others that die or fail to produce offspring.